Adjustable Hand Exerciser Fingers Strength Practicing Piano Guitar Trainer Gripper Tension XR Hot|Hand Grips(Sliver) Features: This finger exerciser is perfect for instrument beginners to better practice finger strength and sensitivity. Flexible keys for pressing exercise, not easy to loose, durable for long time usage. Silicone made top and bottom, soft and comfortable to fit your palm and finger. Keep practice with this portable tool, you can greatly improve your music instrument perform ability. Develops and maintains the strength and dexterity of your fingers, hands and forearms The ultimate conditioning tool for all musicians Variable tension provides customized conditioning for individual fingers Type: Finger Exerciser Material: Plastic, Silicone Suitable for: Kids and Adult Useful, Five-Finger Practice Tool, Portable, Strength Improve Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Package Includes: 1 x Finger Exerciser